ONLINE MEASURE: Two big advertising firms–Starcom MediaVest Group and ZenithOptimedia–are signing on to use comScore’s online advertising measurement, sending a blow to ratings giant Nielsen, which also is trying to bulk up in the space for online ads, WSJ reports. Read More »

The Associated Press disclosed that the Justice Department had secretly seized telephone records of AP offices and reporters for a two-month period of 2012, in a move that officials familiar with the case said was intended to gather information for a leak investigation involving a May 2012 AP story about a counterterrorism operation in Yemen. The AP, which was informed of the seizure by the U.S. Attorney’s Office on Monday, described the acts as a “massive and unprecedented intrusion” in a letter posted on its Web site by CEO Gary Pruitt.

Here’s your morning roundup of the biggest media industry news and happenings. Send tips, suggestions and complaints to william.launder@dowjones.com Click here to receive this newsletter each morning by email. PUMPING IRON “Iron Man 3” debuted to become the second-biggest domestic opening of all time, trumped only by last year’s release of “The Avengers,” another title [...] Read More »

We usually spend a few minutes each Friday mentioning how new movies are expected to perform during their first weekend at the box office. The bigger story this Friday—and this summer—is the surplus of new big-budget movies due out in theaters over the next few months. WSJ notes that Hollywood is expected to introduce 50% more “event” films over the summer than it does typically. Studios hopes the movies, such as Brad Pitt’s “World War Z” and “Fast & Furious 6,” will make up for the sharp dropoff in theater attendance in the first few months this year. So far, so good, as “Iron Man 3” already has kicked off to a robust start at the international box office, Hollywood Reporter and Los Angeles Times report, but topping the performance of last year’s “Avengers” is still uncertain.

NOOK & ANDY: Barnes & Noble is adding Google’s Android app store along with other Google services such as Gmail and Google Maps to Nook HD readers, in a new effort to make the devices more competitive with rival tablet offerings. With Nook revenue down 26% for the quarter ended in late January, any efforts to make the Nook stand out in a crowded market makes sense, but this one isn’t entirely without risk, WSJ notes. The Android app store includes Amazon’s Kindle app, which readers potentially could use to bypass the Nook store altogether. More from New York Times. Read More »